打破std :: for_each循环

#include<iostream>
#include<vector>

int main() {
    std::vector<int> v = {1, 2, 3, 4, 5};

    for (auto it = v.begin(); it != v.end(); ++it) {
        if (*it == 3) {
            // 当遇到3时，删除该元素
            it = v.erase(it);
            // 继续循环
            continue;
        }
        std::cout << *it<< std::endl;
    }

    return 0;
}